2004 Toyota Other gear transmission

Question 1:

When gear is on D and start driving the transmission starts from 1 to 3 and stops when speed has already exceeded 60 kph plus.

From experience it stops at 4.

What would be the solution to repairing the vehicle problem - it is a Toyota Harrier.

Question 2

When driving at a high speed and applying brakes, I feel the brakes rolling and also hear rolling noise.

When brakes are applied, it should firm brake without unnecessary rolls or noises or sound.

I have tried changing brake pads but have not solved the problem.

What would be the solution to the brakes problem?